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We demonstrate the generation of passive mode-locked double-clad ytterbium-doped fiber laser operating in a1-micron region.We prepare the saturable absorber from commercial crystal of molybdenum disulphide(MoS_2).Without chemical procedure,the MoS_2 is mechanically exfoliated by using a clear scotch tape.A few layers of M0S2 flakes are obtained on the tape.Then,a piece of 1 × 1 mm tape containing MoS_2 thin Bakes is inserted between two fiber ferruJes and is integrated in the ring cavity.Stable mode-locking operation is attained at1090 nm with a repetition rate of 13.2MHz.Our mode-locked laser has a maximum output power of 20 mW with1.48 nJ pulse energy.These results validate that the M0S2 has a broad operating wavelength which covers the1-micron region,and it is also able to work in a high-power cavity.
We demonstrate the generation of passive mode-locked double-clad ytterbium-doped fiber laser operating in a1-micron region. We prepare the saturable absorber from commercial crystal of molybdenum disulphide (MoS_2) .Without chemical procedure, the MoS_2 is mechanically exfoliated by using A clear scotch tape. A few layers of M0S2 flakes are obtained on the tape. Chen, a piece of 1 × 1 mm tape containing MoS_2 thin Bakes is inserted between two fiber ferrues and is integrated in the ring cavity.Stable mode-locking operation has attained at 1090 nm with a repetition rate of 13.2 MHz. Our mode-locked laser has a maximum output power of 20 mW with 1.48 nJ pulse energy. These results validate that the MOS2 has a broad operating wavelength which covers the 1-micron region, and it is able to work in a high-power cavity.